These Woolite 6 Pack Hair and Lint Wash Balls are made of nylon, non-toxic, reusable, durable and sturdy materials to help shorten drying time, reduce wrinkles, and prolong the lifespan of clothes and towels. These nylon laundry dryer balls can remove hair and lint from clothes. Use 6 to 10 balls for a wash weighing around 10 pounds. They also are perfect for reducing wrinkles on your delicate garments, clothes, and towels. Perfect for pet owners who have animals that shed. They separate and soften your clothing naturally. They are also safe to use in the washer as well. They come in a pack of 6 wash balls.